It looks like you are coming from United States, but the current site you have selected to visit is Thailand. Do you want to change sites?

Yes, please. No. Keep me on the current site.

Circular stormwater and wastewater pump station



Situated on an estuary of a major river, one of the largest cities in China has an average annual rainfall of 1100 mm (43 in). The three-month typhoon season, usually with heavy rains from the Pacific Ocean, leaves behind long-term seepage of water on the streets and/or floods households due to inadequate drainage systems and an obsolete pump station from the 1950s. Drainage is important to the city’s downtown district, which are comprised of high-end residential complexes, municipal administrative buildings, foreign consulates and bustling shopping centers.

The city’s largest pump station for combined sewage and rain/stormwater handling underwent an major upgrade, which includes nine Flygt PL 7121/965 propeller pumps and four Flygt CP 3501/835 wastewater pumps. All pumps are arranged in a circular chamber and share the same water sump. The effective inside diameter of the sump is 39 m (128 ft). Used for rain/stormwater handling, the Flygt propeller pumps have an operating range of between 2.5 and 3.5 m³/s (40,000 to 55,000 US gpm) and a head of 8 to 13 m (26 to 43 ft); the highest efficiency of 83% is obtained at a head of 10.2 m (34 ft). The sewage pumps have an operating range of between 1.0 and 1.4 m³/s (16,000 to 22,000 US gpm) and a head of 7.8 to 12.5 m (26 to 41 ft); the best efficiency of 84% is obtained at 11 m (36 ft).